Sells defective products

On Saturday the 22 November 2025 I bought a defective solar flood light from On stop china hyper. Three days after installing the light still the light was not working. I retuned the light for an exchange only to be told by the store manager (a Chinese couple) that I am not allowed to exchange the light let alone get a refund. I provided them with the proof purchase which they were not interested in. Furthermore their store workers confirmed to remember me and that they me sold the light on the day. Still the store manager told me they will not help me with either a refund or exchange. They refuse to look at their camera for proof and said they don’t care. This store is the worst. The customer service is very very poor. I will never return and don’t recommend buying here as they sell non working products without option for return. Worst service as customer